Dysentery caused by shigella is also known as bacillary dysentery. There are four different species of shigella: Shigella dysenteriae, Shigella flexneri, Shigella boydii and Shigella sonnei.
This is a companion discussion topic for the original article at https://patient.info/travel-and-vaccinations/travellers-diarrhoea-leaflet/shigella